sql-server-ce | 易学教程

Why can't I use an alias in a DELETE statement?

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问题 In SQL Server Compact Edition in Visual Studio 2010 (maybe SQL Server and SQL in general, I don't know), this command works: DELETE FROM foods WHERE (name IN ('chickens', 'rabbits')) but this command produces an error of: Error near identifier f. Expecting OUTPUT. DELETE FROM foods f WHERE (f.name IN ('chickens', 'rabbits')) 回答1: To alias the table you'd have to say: DELETE f FROM dbo.foods AS f WHERE f.name IN (...); I fail to see the point of aliasing for this specific DELETE statement,

SQL Server CE 4.0 performance comparison

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问题 SQL Server CE 4 (SQL Server Compact Edition 4.0) is not news already (If it is, you could read this article) But it is very interesting to see SQL Server CE 4 performance comparison to other databases. Especially with: SQLite SQL Server (1) SQL Server Express * maybe Firebird (1) for applications where functionality is comparable. Unfortunately there are not so much links about the subject that google provides right now. Actually I was unable to find any (for proper SQL CE version). If one

How do you open an SDF file (SQL Server Compact Edition)? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I have an SDF file and I would like to retrieve its schema and query it with some UI. How can I do this? I have no Visual Studio installed on the machine and I would like to install as little software as possible. 回答1: Try the sql server management studio (version 2008 or earlier) from Microsoft. Download it

resolving corruption in SQL Server Compact Edition database files

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问题 This is not a query. Its a summary of our solution to get around the problem of corruption in SQL Compact Database files with (almost) definite success. SQLCE Corruption is a very common problem. We've received tremendous help from earlier posts in StackOverflow, and hence this post. Our product is a 3-tier architecture with the server running as a Windows Service connected to Rich Clients through .Net Remoting. Our product uses SQLCE since 2006. We have moved from v3.1, to v3.5 and now v4.0.

What are the limitations to SQL Server Compact? (Or - how does one choose a database to use on MS platforms?)

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问题 The application I want to build using MS Visual C# Express (I'm willing to upgrade to Standard if that becomes required) that needs a database. I was all psyched about the SQL Server Compact - because I don't want the folks who would be installing my application on their computers to have to install the whole of SQL Server or something like that. I want this to be as easy as possible for the end user to install. So I was all psyched until it seems that there are limitations to what I can do

sqlbulkcopy using sql CE

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问题 Is it possible to use SqlBulkcopy with Sql Compact Edition e.g. (*.sdf) files? I know it works with SQL Server 200 Up, but wanted to check CE compatibility. If it doesnt does anyone else know the fastest way of getting a CSV type file into SQL Server CE without using DataSets (puke here)? 回答1: BULKCOPY is not supported in SQL CE. Here is the fastest way if you have a huge number of rows in your table; insert is too slow! using (SqlCeConnection cn = new SqlCeConnection(yourConnectionString)) {

Can't get sql server compact 3.5 / 4 to work with ASP .NET MVC 2

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I'm using Visual Studio 2008 Pro. I'm probably missing something very obvious here, but I've been trying to get the CTP for Sql Server compact 4 to work in my asp.net mvc application. I can find next to no instruction on how to set this up or a working example application. My goal is a private install so I can just include it in my web app without having to do sql server setup on my domain hosting. This is really just me shooting the breeze and trying to figure this out. I don't plan to host a market or anything with this. So, I've copied all the dll's that install in the base 4.0 direction (c

How can I manage SQL CE databases in SQL Server Management Studio?

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问题 I created a SDF (SQL CE) database with Visual Studio 2008 (Add / New Item / Local Database). Is it possible to edit this database with SQL Server Management Studio? I tried to attach it but it only offered .mdf and attaching a .sdf file results in "failed to retrieve data for this request". If so, is it possible to create SDF files with Management Studio as well? Or are we stuck with the simple interface of the Visual Studio 2008 database manager? 回答1: You can create .sdf files with SQL

Is SQL Server Compact discontinued from Visual Studio 2013?

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when I tried to create a new SQL Server Compact file from Visual Studio -> Add New Item, I don't see the 'Local Database' option any more which was actually the way to add SQL Server Compact Database. Now, if it is really discontinued from Microsoft, then, what is the recommended Embedded Database technology from Microsoft for Desktop Applications ? I tried SQLite but deployment is headache for SQLite because, the user may not have correct version of Visual C++ distributable installed in his/her machine. Yes, SQL Server Compact has been deprecated (see the comments on this Connect item ). You

Cannot find namespace 'System.Data.SqlServerCe'

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问题 I did include the System.Data.SqlServerCe dll, put using System.Data.SqlServerCe; in my code, but when I open the .NET page I get: The type or namespace name 'SqlServerCe' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) I have nave no idea how to fix this. Thanks in advance. 回答1: This can be solved confirming following 2 points: Check whether you already have System.Data.SqlServerCe namespace added to the References folder of your application. If its not